[T]o the extent that we view morality as not simply a human creation, a device whose sole purpose is to ensure cooperation among humans, and thereby promote human flourishing, we have powerful reasons to reject the view that the interests of animals are less significant than the like interests of humans. Such a rejection will render much animal experimentation morally unacceptable. This is not a conclusion that will be eagerly embraced by the scientific community. It is, however, the conclusion best supported by a careful examination of the relevant moral reasons.
Alastair Norcross, ‘Animal Experimentation’, in Bonnie Steinbock (ed.), The Oxford Handbook of Bioethics, Oxford, 2007, p. 666